Ruling · Tila Caturthī · 1940

Monday 12 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 219 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two evenings

One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.

Evening of Sunday 11 February

Caturthī is absent from pradoṣa. Not taken.

17:49 sunsetpradoṣa ends 19:37
17:2517:4918:1318:3719:0119:2519:49

0 of 107 minutes covered

Evening of Monday 12 February

Taken. The only evening Caturthī reaches.

17:50 sunsetpradoṣa ends 19:37
17:2617:5018:1418:3819:0219:2619:50

107 of 107 minutes covered

Caturthī presentPradoṣa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 23:15 on Sun 11 Feb to 01:59 on Tue 13 Feb.

    1940-02-11T15:15:22Z → 1940-02-12T17:59:10Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:49–19:37 on the 11th, 17:50–19:37 on the 12th.

    pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Caturthī must be present during pradoṣa. It covers 0 of 107 minutes on the 11th and 107 of 107 on the 12th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

    Only one evening qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 13123 s

  5. 05

    Ruling

    Tila Caturthī, Baoding, 1940: Monday 12 February.

    confidence: determinate

Say it like this

In Baoding, Tila Caturthī 1940 falls on Monday 12 February. Caturthī runs from 23:15 on Sun 11 Feb to 01:59 on Tue 13 Feb and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1940/tila-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 12 Feb
Ahargaṇa, classicalDisc centre, no refractionMon 12 Feb
compat-drikpanchangComparison profileMon 12 Feb
No institution has a recorded ruling for Baoding.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/tila-chaturthi · ruleset 2026.3-draft

Month
Māgha, amānta
Pakṣa · aṅga
Śukla · Caturthī
Kāla
Pradoṣa
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 105

“S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturthīSunset 11thCoveredSunset 12thCoveredRuled
Los Angeles07:15 → 09:5917:32105 min17:330 min11 Feb
Chicago09:15 → 11:5917:17109 min17:180 min11 Feb
Jersey City10:15 → 12:5917:25108 min17:260 min11 Feb
Port of Spain11:15 → 13:5918:1398 min18:130 min11 Feb
London15:15 → 17:5917:06114 min17:0851 min11 Feb
Durban17:15 → 19:5918:4786 min18:4772 min11 Feb
Dubai19:15 → 21:5918:0936 min18:10102 min12 Feb
Delhi20:45 → 23:2918:070 min18:08103 min12 Feb
Kolkata20:45 → 23:2917:300 min17:31101 min12 Feb
Singapore22:35 → 01:1918:410 min18:4195 min12 Feb
Sydney01:15 → 03:5918:530 min18:5285 min12 Feb
Suva03:15 → 05:5918:430 min18:4390 min12 Feb
Profile · tradition
pac-rp@2026.1 · smarta
Rule
tila-chaturthi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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